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Finding the Fourth Proportional to 717,790.66, 990,620.90 and 536,187.30

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Solution

The fourth proportional to 717,790.66, 990,620.90 and 536,187.30 is: 739,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,790.66 : 990,620.90 = 536,187.30 : x
  2. Step 2: Convert to fraction form
    717,790.66/990,620.90 = 536,187.30/x
  3. Step 3: Cross multiply
    717,790.66x = 990,620.90 × 536,187.30
  4. Step 4: Simplify right side
    717,790.66x = 531,158,344,325.56
  5. Step 5: Solve for x
    x = 531,158,344,325.56/717,790.66
  6. Step 6: Final answer
    x = 739,990.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.